continuous (part of speech: adjective)
incessant, cyclical, flat, featureless, unchangeable, recurrent, un-intermittent, even, level, indefatigable, monolithic, unceasing, unvarying, unchanging, sequential, habitual, nonstop, continuous, undying, robot-like, invariable, seamless, constant, steady, persistent, monotonous, gapless, consecutive, consistent, perennial, continuing, coherent, unending, continual, uniform, unbroken, straight, repetitive, lasting, repeated, unremitting, homogeneous, undeviating, connected, regular
perpetual (part of speech: adjective)
infinite (part of speech: adjective)
incalculable, unlimited, limitless, infinite, termless, everlasting, bottomless, innumerable, illimitable, boundless, interminable, endless, immeasurable, countless, perpetual, timeless, unbounded, eternal, numberless, inexhaustible, immemorial
- I had nothing to guide me, as I advanced, but the ceaseless roaring of the sea on my right hand. - "Basil", Wilkie Collins.
- During the whole interval, whenever I went to the bottom of the staircase, I heard her footstep, saw her light pass above, and heard her ceaseless low cry. - "Great Expectations", Charles Dickens.
- Gradually the eyes of Carlingford grew accustomed to that dainty tiny figure sweeping along, by mere impulse of cheerful will and ceaseless activity, the three open- eyed staring children, the faded mother. - "The Doctor's Family", Mrs. (Margaret) Oliphant.